<abstract abstract-type="toc"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <graphic position="anchor" id="ga" xlink:href="ark:/27927/pgj1zk8nvhk" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />Illustration of the procedure for the preparation of a CFGO and SWCNTs-based electrochemical DNA biosensor.</p> </abstract>